alarm

while true do
  if rs.getInput("bottom") then
  os.pullEvent("redstone")
  for i = 5,1,-1 do
    rs.setOutput("left", true)
    sleep(1)
    rs.setOutput("left", false)
    print(i)
    sleep(2)
  end
  sleep(2)
    rs.setOutput("left", false)
    print("Done")
    sleep(2)
  else
    os.pullEvent("redstone")
    rs.setOutput("left", true)
    sleep(1)
  end
end